Severity: Informational

OpenAI is adding invisible watermarks to ChatGPT and Codex text in the EU

OpenAI is preparing to add invisible watermarks to text generated by ChatGPT and Codex in the European Union.

Excerpt from the primary source: BleepingComputer

Who is affected

Home users · Small businesses · Developers

Affected technology: ChatGPT & OpenAI API

What you should do

No specific action is required at this time.

Sources

We link to original and authoritative sources. Headlines and excerpts belong to their publishers.

Original reporting

OpenAI is adding invisible watermarks to ChatGPT and Codex text in the EU BleepingComputer · bleepingcomputer.com · Oct 5, 2026 · Primary source